Functional Description - Makita AN620H Manuel D'instructions

• To maintain product SAFETY and RELIABILITY, main-
tenance and repairs should be performed by Makita
Authorized Service Centers, always using Makita
replacement parts.
• Use only pneumatic tool oil specified in this manual.
• Never connect tool to compressed air line where the
maximum allowable pressure of tool cannot be
exceeded by 10%. Make sure that the pressure sup-
plied by the compressed air system does not exceed
the maximum allowable pressure of the fastener driving
tool. Set the air pressure initially to the lower value of
the recommended allowable pressure.
• Do not attempt to keep the trigger or contact element
depressed with tape or wire. Death or serious injury
may occur.
• Always check contact element as instructed in this
manual. Nails may be driven accidentally if the safety
mechanism is not working correctly.
SAVE THESE INSTRUCTIONS.
INSTALLATION
Selecting compressor (Fig. 1)
The air compressor must comply with the requirements
of EN60335-2-34.
The air compressor must comply with the requirements
of ANSI B19.3.
Select a compressor that has ample pressure and air
output to assure cost-efficient operation. The graph
shows the relation between nailing frequency, applicable
pressure and compressor air output.
Thus, for example, if nailing takes place at a rate of
approximately 55 times per minute at a compression of
1.76 MPa (17.6 bar), a compressor with an air output
over 50 liters/minute is required.
Pressure regulators must be used to limit air pressure to
the rated pressure of the tool where air supply pressure
exceeds the tool's rated pressure. Failure to do so may
result in serious injury to tool operator or persons in the
vicinity.
Selecting air hose (Fig. 2)
Use a high pressure resistant air hose.
Use an air hose as large and as short as possible to
assure continuous, efficient nailing operation.
CAUTION:
• Low air output of the compressor, or a long or smaller
diameter air hose in relation to the nailing frequency
may cause a decrease in the driving capability of the
tool.
Lubrication
To insure maximum performance, install an air set (oiler,
regulator, air filter) as close as possible to the tool. Adjust
the oiler so that one drop of oil will be provided for every
30 nails. (Fig. 3)
When an air set is not used, oil the tool with pneumatic
tool oil by placing 2 (two) or 3 (three) drops into the air fit-
ting. This should be done before and after use. For
proper lubrication, the tool must be fired a couple of
times after pneumatic tool oil is introduced. (Fig. 4)

FUNCTIONAL DESCRIPTION

CAUTION:
• Always disconnect the air hose before adjusting or
checking function on the tool.
Adjusting the nailing depth (Fig. 5 & 6)
CAUTION:
• Always disconnect the hose before adjusting the depth
of nailing.
If nails are driven too deep, turn the adjuster clockwise. If
nails are driven too shallow, turn the adjuster counter-
clockwise.
The adjustable range is 0 – 6 mm. (One full turn allows
0.8 mm adjustment.)
Hook (Fig. 7)
CAUTION:
• Always disconnect the hose when hanging the tool
using the hook.
• Never hang the tool on a waist belt or like. Dangerous
accidental firing may result.
The hook is convenient for hanging the tool temporarily.
This hook can be installed on either side of the tool.
When changing the installation position, remove the
screw with a screwdriver. Install the hook on another side
for installation and then secure it with the screw.
Use the nose adapter (Fig. 8)
CAUTION:
• Always disconnect the hose before installing or remov-
ing the nose adapter.
If you like to protect the surface of workpiece, attach the
nose adapter of contact element.
When nailing workpieces with easily-marred surfaces,
use the nose adapter. To attach the nose adapter to the
contact arm, press it onto the contact arm as far as it will
go.
ASSEMBLY
CAUTION:
• Always disconnect the air hose before loading the
nailer.
Loading nailer
CAUTION:
• Make sure that the coil support plate is set to the cor-
rect step for used nails.
Disconnect the air hose from the tool. Select nails suit-
able for your work. Depress the latch lever and open the
magazine cap. (Fig. 9)
Select nails suitable for your work. Depress the latch
lever and open the magazine cap.
Lift and turn the coil support plate so that the arrow with
nail size indicated on the coil support plate will point to
the corresponding graduation increment marked on the
magazine. If the tool is operated with the coil support
plate set to the wrong step, poor nail feed or malfunction
of the tool may result. (Fig. 10)
Place the nail coil over the coil support plate. Uncoil
enough nails to reach the feed claw. Place the first nail in
the driver channel and the second nail in the feed claw.
Place other uncoiled nails on feeder body. Close the
magazine cap slowly until it lock after checking to see
that the nail coil is set properly in the magazine. (Fig. 11)
9